Feeding and mastication behaviour in ruminants.

Baumont, René; Doreau, M.; Ingrand, S.; Veissier, Isabelle

doi:10.1079/9781845930639.0241

Cited by 17 publications

(14 citation statements)

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“…Sheep ate for longer when grass hay was orally consumed, whereas they ate faster when it was lucerne hay. This could be explained by the physical differences between lucerne and grass hays: lucerne hay is less fibrous than grass hay, favouring easier prehension and mastication by sheep Baumont et al, 2006) and allows more flexibility in intake rate compared with coarse hays that need intense mastication activity.…”

Section: Discussionmentioning

confidence: 99%

Feeding behaviour of sheep fed lucerne v. grass hays with controlled post-ingestive consequences

Favreau

Ginane

Baumont

2010

Animal

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Understanding what determines feeding behaviour in herbivores is essential to optimise the use of forages in breeding systems. Herbivores can evaluate foods by associative learning of their pre-ingestive characteristics (taste, odour, etc.) and their postingestive consequences. Post-ingestive consequences are acknowledged as influencing intake and food choices, but the role of pre-ingestive characteristics is still being debated. Our experiment was designed to test their separate effects on daily dry matter intake (DMI), intake patterns and short-term choices in sheep by crossing the nature of the hay orally consumed (o) ad libitum, lucerne (L) or grass (G), with the nature of the hay introduced into the rumen (r), L or G, at a rate of half the total amount of hay received the day before. We applied four treatments, Go/Gr, Go/Lr, Lo/Gr and Lo/Lr, to test the effects of (i) post-ingestive consequences with similar pre-ingestive characteristics (Go/Gr v. Go/Lr; Lo/Gr v. Lo/Lr) and (ii) pre-ingestive characteristics with similar post-ingestive consequences at the end of the feeding period (Go/Lr v. Lo/Gr). Six rumen-fistulated sheep underwent all the treatments over 11-day periods in a latin square design. Eating time was restricted to 6 h/day, intraruminal introductions were performed just before food offer and choice tests were conducted after food removal. For similar pre-ingestive characteristics, DMI increased when L hay was introduced into the rumen rather than G ( P , 0.05), possibly owing to a lower fill effect of L due to its lower NDF content and higher rumen degradability. The increased DMI resulted from longer eating time when G was orally consumed (149 v. 192 min, P , 0.05), whereas it resulted from higher intake rate with L (4.8 v. 6.1 g/min, P , 0.05). For similar post-ingestive consequences at the end of the feeding period (Go/Lr and Lo/Gr), DMI were similar ( P . 0.05). Pre-ingestive characteristics or palatability per se did not therefore influence daily intake, although they influenced eating patterns. Pre-ingestive characteristics also greatly influenced short-term choices in favour of the hay that was not previously consumed, independently of any post-ingestive influence. This study confirms the effects of post-ingestive consequences on daily intake, but demonstrates that these variations are obtained by different behavioural adjustments under the influence of pre-ingestive characteristics. Preference for novelty, regardless of post-ingestive consequences, thus suggests that sheep may seek a diverse diet more for pleasure than for functional purposes, with implications for animal welfare.Keywords: feeding behaviour, intake, sensory characteristics, rumen, sheep ImplicationsBreeding systems tend to increase the proportion of forages in the total diet of ruminants, both for economic gain and in response to social demand for environmental protection and welfare. However, their use remains to be optimised. To do this we need a better understanding of how food characteristics influence feeding beh...

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Section: Discussionmentioning

confidence: 99%

Feeding behaviour of sheep fed lucerne v. grass hays with controlled post-ingestive consequences

Favreau

Ginane

Baumont

2010

Animal

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“…Once during the pre-experimental period (Week 6) and four times during finishing (Weeks 4, 8 and 14 for the three diets and Week 19, 22 or 24, respectively, for strawconcentrate, maize silage-concentrate and hay-concentrate diets), the daily eating time of each bull was estimated over the 7 days of the week as the mean daily time during which its feeding gate was open. According to Metz (1975) and Baumont et al (2006), we considered that inter-meal intervals lasted at least 4 min. This feeding behaviour estimation did not include straw ingestion.…”

Section: Measurementsmentioning

confidence: 99%

“…An experiment with Limousin bulls fed a 45% maize silage diet suggests that bulls regulate their intake activity to achieve a balanced intake in terms of concentrate and longfibre roughage to meet their behavioural and physiological requirements (Cozzi and Gottardo, 2005). Mastication activity is a necessity for ruminants and is a component of animal behaviour that has to be taken into account to ensure their welfare (Baumont et al, 2006). A minimum threshold of 10% long-fibre roughage on a dry matter basis -E-mail: mrichard@clermont.inra.fr for beef cattle diets has been proposed to avoid pathological conditions and poor welfare (EU-SCAHAW, 2001).…”

Section: Introductionmentioning

confidence: 99%

“…Cattle ingest their food essentially during the daytime, with two major peaks of eating, at the beginning and at the end of the day (Jarrige et al, 1995;Baumont et al, 2006). An experiment with Limousin bulls fed a 45% maize silage diet suggests that bulls regulate their intake activity to achieve a balanced intake in terms of concentrate and longfibre roughage to meet their behavioural and physiological requirements (Cozzi and Gottardo, 2005).…”

Section: Introductionmentioning

confidence: 99%

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Effects of the forage-to-concentrate ratio of the diet on feeding behaviour in young Blond d’Aquitaine bulls

Mialon

Martin

García

et al. 2008

Animal

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The activities of bulls, their feeding behaviour and their ruminal pH were examined at several stages during the finishing period, according to the forage-to-concentrate ratio of their diet. Twenty-four bulls of the Blond d'Aquitaine breed (initial body weight 5 326 6 21 kg) were assigned to six balanced pens with a space allowance of 9.4 m 2 per bull during the finishing period. They were fed three different diets with achieved forage-to-concentrate ratios of (i) 8% straw and 92% concentrate, (ii) 44% hay and 56% concentrate and (iii) 57% maize silage and 43% concentrate. Bulls had ad libitum access to feed dispensed once daily. Offered and refusals were weighed on 5 consecutive days per week. The bulls were slaughtered at the common final live weight of 650 kg and the finishing period lasted 138, 181 and 155 days for straw-concentrate, hay-concentrate and maize silage-concentrate diets, respectively. The time budget was estimated four times by scan sampling with a 10-min interval. Feeding behaviour was appraised using data from electronic feeding gates. Ruminal pH was measured from a ruminal fluid sample collected by rumenocentesis. On average, the bulls spent 78% of the time lying or standing still, and 11% of the time eating. The forage-to-concentrate ratio of the diet influenced only those activities directly linked to feeding, i.e. eating and drinking. Bulls fed a high-concentrate diet spent less time eating than the other bulls (47 min v. .2 h) and took shorter meals (7 min v. 17 min). The bulls fed the straw-concentrate diet spread their meals over the entire day, whereas the others maintained two major peaks of eating activity, the main one in the morning after feed dispensing, the other one at the end of the diurnal period. Intake rate ranged widely between diets, from 58 g/min on average for the diets based on hay or maize silage up to 173 g/min for the high-concentrate diet. The concentrate-diet bulls also had a lower ruminal pH during the first 2 months of the finishing period. The dispersion of meals based on a high-acidosis-risk diet may be a way to limit the decrease in ruminal pH.

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“…Although, Baumont et al (2006) as they mentioned that the ingestive behavior didn't affected by the age of cattle. The obtained results in table (2) showed that the mutual suckling time and frequency between the dairy females according to their age were at highest level at early life of age (three years, 9416.0 ± 60.08 a ) and four years, 223.33±17.27 b ) and gradually were disappeared at seven years of age and the differences were significant.…”

Section: Resultsmentioning

confidence: 99%

Influence of Age on Ingestive Behaviour, Suckling Disorders, Productive Traits, Milk Constituent and Serum Cortisol Level of Friesian Dairy Cows

Abdel-Hamid¹,

Manaa²,

Tahoun³

et al. 2017

AJVS

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Key words:Ingestive Behaviour, Suckling Disorders, cow This study was carried out during the period from February 2016 to February 2017 on 100 Friesian dairy cows aged (3-7 years old) of different parities belonged to private dairy farm which locate at Hehia city at Sharkiya governorate. The aim of the present study was to investigate the effect of age of dairy cows on their ingestive behaviour, suckling disorders, productive performance, milk constituents and serum cortisol level of Friesian dairy cows. The results were revealed that, on ingestive behaviour, the age of 4 th years old was the highest significant (P<0.05) feeding time, feed frequency, drinking time, drinking frequency, rumination time and rumination frequency (399.9 min, 87.2, 18.6 min, 142.9, 52.2 min and 37.2); respectively. The mutual suckling time and frequency were at highest significant level (P<0.05) at early life of age (three years), while the tongue rolling, ear and nose suckling were increased with age. On productive traits at different ages studied, the 7 years old age group was the highest significant (P<0.05) at parity (4.66). Meanwhile, the 6 years old age group was the highest significant (P<0.05) at milk production and day in milk (8077.5 kg and 300.0 day; respectively). Dry period showed non significant results between the different ages. The 6 th years of age was the highest significant (P<0.05) cortisol level (2.80 ng/mL) than other ages. Correlations between productive and ingestive behaviour traits for all ages studied showed positive high significant estimates (P<0.05) at parity with drinking frequency, milk production with day in milk , feeding time with drinking frequency and feeding time with rumination time. Concerning the effect of age on the milk components, the SNF and protein components of the milk were significantly lower (P<0.05) in young than adult cows (from 3 years to 7 years), however, significant difference was not observed in fat, lactose and pH of the milk between age groups.

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Feeding and mastication behaviour in ruminants.

Cited by 17 publications

References 0 publications

Feeding behaviour of sheep fed lucerne v. grass hays with controlled post-ingestive consequences

Feeding behaviour of sheep fed lucerne v. grass hays with controlled post-ingestive consequences

Effects of the forage-to-concentrate ratio of the diet on feeding behaviour in young Blond d’Aquitaine bulls

Influence of Age on Ingestive Behaviour, Suckling Disorders, Productive Traits, Milk Constituent and Serum Cortisol Level of Friesian Dairy Cows

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