Performance of dairy ewes fed diets with a fibrolytic enzyme product included in the concentrate during the suckling period

Flores, Carlos; Caja, G.; Casals, R.; Albanell, Elena; Such, X.

doi:10.1017/s1751731108001961

Cited by 12 publications

(8 citation statements)

References 24 publications

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“…Ration DMI averaged 2.02±0.04 kg/d (4.8% of BW) from wk 10 to 26 of lactation, according to the value of DMI predicted by INRAtion v.2.7 (2.1 kg DM/d), and was similar in both groups of goats. This result agrees with other studies in which no differences in DMI were reported in suckling goats and ewes (Titi and Lubbadeh, 2004;Flores et al, 2008), dairy sheep (Flores et al, 2002(Flores et al, , 2008, beef steers (Feng et al, 1996), heifers (Hristov et al, 2000) or in dairy cows Yang et al, 1999;Kung et al, 2000;Bowman et al, 2002) when similar enzyme mixture with cellulase and xylanase activity were added to either TMR, forage or concentrate.…”

Section: Results and Discusionsupporting

confidence: 92%

“…Although many experiments on enzymes have been conducted in dairy cows (Beauchemin et al, 2003), only a few results have been reported in sheep (Flores et al, 2002(Flores et al, , 2008Pinos-Rodríguez et al, 2002;Titi and Lubbadeh, 2004) or in goats (Titi and Lubbadeh, 2004). The last authors refer to the short time effects of enzymes in suckling goats and, to our knowledge, no enzyme effects have been reported in dairy goats.…”

Section: Introductionmentioning

confidence: 89%

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Lactational effects of adding a fibrolytic enzyme complex to the concentrate of lactating dairy goats

González¹,

Caja²,

Albanell³

et al. 2008

J. Anim. Feed Sci.

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Twenty-four multiparous Murciano-Granadina dairy goats in mid-lactation (wk 8 to 30) were used in a single cross-over design to evaluate the effects of supplementation with an exogenous fi brolytic enzyme preparation, characterized by cellulase and xylanase activities, on feed intake, milk yield and composition, and liveweight and body condition changes. Goats received ad libitum a basal total mixed ration composed of 65% forage and 35% concentrate. The treatments were: control (without enzyme) and experimental with enzyme (included at the recommended commercial dose of 4.7 ml/kg concentrate). Feed intake, milk yield, 4% fat corrected milk yield, and milk composition were not affected by enzyme supplementation, although milk casein content tended to decrease in the enzyme treatment. Body weight change tended to be higher with the enzyme treatment.

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Section: Results and Discusionsupporting

confidence: 92%

Section: Introductionmentioning

confidence: 89%

Lactational effects of adding a fibrolytic enzyme complex to the concentrate of lactating dairy goats

González¹,

Caja²,

Albanell³

et al. 2008

J. Anim. Feed Sci.

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“…In contrast, Dean et al (2007) revealed that enzyme supplementation did not improve in vivo digestibility of lactating cows, therefore milk production was not significantly affected. Flores et al (2008) found that no effects on lactation when fibrolytic enzyme product was added to the concentrate of dairy ewes. Milk protein was higher in treated groups but differences were not significant.…”

Section: Milk Yield and Compositionmentioning

confidence: 97%

Productive and Reproductive Performance and Metabolic Profile of Barki Ewes Supplemented with Two Forms of Probiotics as Feed Additives.

El-Hawy¹,

El-Bassiony²,

Bakr³

et al. 2019

jwpr

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Present study aimed to evaluate the impacts of probiotic mixtures as a biological feed additive on the reproductive and productive performance of Barki ewes under desert conditions. A total number of 100 Barki ewes were randomly assigned and divided into five equal groups (20 each) to evaluate the effect of different levels and forms of biological additives mixtures on Barki ewes productivity. The first mixture of probiotic added as liquid forms (Mixture Probiotic Liquid, MPL), while the second added as powder forms (Mixture Probiotic Powder, MPP). The two forms of enzymes used at two levels (6 and 10ml or g/h/d). The two additives formed of exogenous enzymes and obtained through an anaerobic fermentation process of Ruminococcus flavefaciens. The results indicated that feed intake was higher in MPL and MPP treated groups compared to control group. During pregnancy and lactation stages, MPL and MPP groups recorded significantly increase in ewes body weight. The conception and lambing rates were tended to differ between groups, but the number of lambs born alive was significantly higher in MPP groups [19 lambs for group 2 (G2) and 18 lambs for group 3 (G3)] followed by MPL groups (16 and 18 lambs for group 4 (G4) and group 5 (G5), respectively), while the control group recorded 18 lambs. The mortality rate from birth to weaning decreased (P<0.05) in treated groups with 5%, 5%, 0% and 5% for G2, G3, G4 and G5, respectively, while the mortality rate increased (P<0.05) by 11% in control group. The milk yield tended to increase in MPP then MPL groups. The birth and weaning weights as well as average daily gain increased (P<0.05) in MPL and MPP groups. Thyroid hormones T 3 and T 4 concentrations increased (P<0.05) with enzymes mixtures supplementations. In conclusion, under the semi-arid conditions, supplementation of exogenous enzyme preparations of MPL and MPP to sheep rations, may improve weaning weight and daily gain of lambs as much as live body weight and milk production of ewes.

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“…Another study conducted by Flores et al (2008) reported no effects on lactation when the fibrolytic enzyme product was added to the concentrate of dairy ewes.…”

Section: Sheepmentioning

confidence: 97%

Exogenous Enzymes in Ruminant Nutrition: A Review

Sujani¹,

Seresinhe²

2015

Asian J. of Animal Sciences

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The concept of supplementation of ruminant diets with exogenous enzymes is not new though a considerable research interest on this field has been emerged from 1990s. Availability of wide range of exogenous enzyme products, development of better methods to evaluate enzyme activity, revised knowledge on rumen functions and recent advances of biotechnology which lowers the cost of enzyme production have fuelled the enzyme utilization in ruminant industries. The exogenous enzymes used in ruminant diets can be characterized in to main categories as fibrolytic, amylolytic and proteolytic based on specific substrate on which their enzyme activity can perform. The sources of these exogenous enzymes are mainly four bacterial species, three fungal species and some yeasts. Solid State Fermentation (SSF) and Submerged Fermentation (SmF) are the major methods for enzyme extraction which have combined with several other biotechnological aspects. The enzyme application method can vary in a wide range from applying to forage at harvesting, at ensiling, at feeding and the portion of feed which is mixed with enzyme may also vary from to forage to concentrate to a part of totally mixed rations. Up to date numerous number of researches have been done with ruminants like cattle both dairy and beef, goat, sheep and less with buffalo. The results seems to be inconsistent but positive results on feed intake, nutrient digestibility, growth performance, other production parameters, manure nutrient excretion etc., have been obtained. Therefore more fine-tuned research efforts are highly suggested for the generalization of exogenous enzyme usage in ruminant nutrition.

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Performance of dairy ewes fed diets with a fibrolytic enzyme product included in the concentrate during the suckling period

Cited by 12 publications

References 24 publications

Lactational effects of adding a fibrolytic enzyme complex to the concentrate of lactating dairy goats

Lactational effects of adding a fibrolytic enzyme complex to the concentrate of lactating dairy goats

Productive and Reproductive Performance and Metabolic Profile of Barki Ewes Supplemented with Two Forms of Probiotics as Feed Additives.

Exogenous Enzymes in Ruminant Nutrition: A Review

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