Ingestive behavior and efficacy of male sheep housed in different stocking densities

Costa, Roberto Germano; Ribeiro, Neila Lidiany; Nobre, Priscila Torres; Carvalho, Francisco Fernando Ramos de; Medeiros, Ariosvaldo Nunes de; Martins, F. E. B.

doi:10.1590/rbz4820180219

Cited by 9 publications

(7 citation statements)

References 19 publications

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“…In the current study, the concentrations of fibrous carbohydrates in the diets (NDF and ADF) were similar, showing an average rumination time of 8.4 h/day. Costa et al [ 32 ] indicated that, regardless of the concentration of nondigestible neutral detergent fiber in the diet, lambs with high intake rates have shorter rumination times. Numerically, the rumination time was short in lambs fed the CSFA diet, which may have promoted higher DM and NDF rumination efficiencies.…”

Section: Discussionmentioning

confidence: 99%

Protected or Unprotected Fat Addition for Feedlot Lambs: Feeding Behavior, Carcass Traits, and Meat Quality

Alba

Júnior

Leite

et al. 2021

Animals

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This study aimed to evaluate the effect of the inclusion of protected or unprotected fats in the diet of feedlot lambs on feeding behavior, productive characteristics, carcass traits, and meat quality. Forty male Dorper × Santa Inês lambs (22.27 ± 2.79 kg) were randomly assigned to treatments in a completely randomized design. The experimental treatments consisted of five diets: no added fat (NAF), whole soybeans (WSB), calcium salts of fatty acids (CSFA), soybean oil (SO), and corn germ (CG). The total intake of dry matter (DMI) (p < 0.001) and neutral detergent fiber (NDFI) (p = 0.010) were higher in the CSFA and NAF diets. Feeding behavior, morphometric measurements, physicochemical characteristics, and centesimal composition of the Longissimus lumborum muscle were similar between treatments (p > 0.05). The CSFA diet provided higher production (p < 0.05) and better-quality carcasses. The inclusion of fat sources increased the concentration of polyunsaturated fatty acids (p < 0.05). The use of calcium salts of fatty acids in feedlot lambs’ diets provides better quantitative and qualitative characteristics of the meat and carcass.

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Section: Discussionmentioning

confidence: 99%

Protected or Unprotected Fat Addition for Feedlot Lambs: Feeding Behavior, Carcass Traits, and Meat Quality

Alba

Júnior

Leite

et al. 2021

Animals

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“…is defined as swallowing water were recorded according to the methodology proposed by Costa et al (2019), by instantaneous and continuous sampling, using the focal sampling method and sampling intervals of 5 min in a direct fashion, with continuous periods of 24 h from 8:00 AM to 8:00 PM. The number of times the animal defecated, urinated, and sought water was visually and continually observed for 24 h by strategically positioned trained observers in an alternation system so as not to promote changes in the routine of the animals.…”

Section: Ingestive Behaviormentioning

confidence: 99%

Ingestive Behavior of Santa Inês Sheep Under Thermoneutrality and Thermal Stress Upon Consumption of Saline Water

et al. 2021

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The consumption of saline water in semiarid regions is a recurrent situation that can affect the ingestive behavior of small ruminants. This study evaluated the ingestive behavior of Santa Inês sheep maintained in a climatic chamber under two air temperatures-25 °C within the thermal comfort zone (TCZ) and 32 °C above the TCZ-and consuming water with three levels of salinity-2.0, 4.0, and 8.0 dS m-1. The experimental design was completely randomized in 2 × 3 factorial schemes, comprising two air temperatures and drinking water with three levels of salinity, in six replicates (animals). Regardless of air temperature, the consumption of saline water did not affect feed and water intake by the sheep; however, there was a decrease in feed intake and an increase in water intake as air temperature increased. Feed and water intake; feeding, rumination, and idle times; defecation frequency; and fecal production were not affected (P > 0.05) by the water salinity levels, whereas reduction in feed intake, feeding time, and rumination time and an increase in water intake and idle time were observed as air temperature increased. In summary, increasing air temperature negatively affected the ingestive behavior of the animals; however, water with salinity up to 8.0 dS m-1 did not affect their ingestive behavior and hence could be used for drinking.

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“…The behavioral variables observed were: feeding (chewing a starter in their mouth), ruminating (chewing regurgitated food, either standing or in lying position), idleness (standing without any movement or behavior), drinking (swallowing the water), mastication (the sum of feeding times and the rumination time), and other activities (defecation, urination, drinking). The environment was kept under artificial illumination during data collection of the nocturnal observation of the animals (Costa et al, 2019). Data on rumination time and quantity of chews per feed cake were carried out at two pre-established times: from 10:00 pm to 0:00 am and from 4:00 am to 6:00 am, in which the time of rumination by bolus was counted by using a digital timer, and direct observation of the number of chews per bolus.…”

Section: Acid Detergent Fiber 253mentioning

confidence: 99%

Salinity-water levels on productive performance, physiological and behavioral responses of ½ Dorper x ½ Santa Inês crossbred sheep

Costa¹,

Furtado²,

Ribeiro³

et al. 2021

Semina: Ciênc. Agrár.

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The objective of this study was to evaluate the influence of four water salinity levels on productive performance, physiological and behavioral responses of confined sheep. Thus, 24 crossbred sheep, ½ Dorper x ½ Santa Inês were evaluated while receiving ration and water ad libitum. The experimental design was completely randomized, composed of four treatments (1.5; 3.0; 6.0 and 9.0 dSm-1) and six replicates. The water supply with salinity of up to 9.0 dSm-1 did not affect (P > 0.05) the physiological indexes, performance, or ingestive behavior of the animals, which were able to maintain normal physiological conditions even at times when the thermal comfort indexes were above the ideal. For voluntary water consumption, it was observed that there was a significant difference between treatments (P < 0.05), where animals consuming water with a conductivity of 1.5; 3.0 dSm-1 had lower consumption than those who received six dSm-1. The supply of water with a salinity of up to 9.0 dSm-1 did not affect the performance or the ingestive behavior of the animals, so waters with this salinity can be a valid alternative for crossbred sheep in the semi-arid region, as long as it is used seasonally and strategically.

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Ingestive behavior and efficacy of male sheep housed in different stocking densities

Cited by 9 publications

References 19 publications

Protected or Unprotected Fat Addition for Feedlot Lambs: Feeding Behavior, Carcass Traits, and Meat Quality

Protected or Unprotected Fat Addition for Feedlot Lambs: Feeding Behavior, Carcass Traits, and Meat Quality

Ingestive Behavior of Santa Inês Sheep Under Thermoneutrality and Thermal Stress Upon Consumption of Saline Water

Salinity-water levels on productive performance, physiological and behavioral responses of ½ Dorper x ½ Santa Inês crossbred sheep

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