| Titles |
|
English :
|
Effect of dietary graded betaine supplementation on productive and reproductive performance of rabbit does under Egyptian summer condition
|
|
Arabic :
|
تأثير اضافة البيتاين في العليقة على الاداء الانتاجى التناسلى للارانب تحت ظروف الصيف المصرية
|
|
| Abstract |
The objective of this study was to evaluate the effects of betaine supplementation in diet of rabbit does in several physiological states on digestibility, some blood parameters, milk composition and reproductive performance under Egyptian summer condition. Thirty APRI line rabbit does (6 does per treatment) of about 8-9 months of age with an average live body weight of 2916 g, were used during a period from 1st May 2011 to 30th September 2011. Five experimental treatments were used in this experiment. Animals were fed the basal diet supplemented with 0 (control), 250, 500, 750 and 1000 mg betaine/kg diet. Digestibility coefficients of DM, CP, CF, NFE and GE were significantly increased with increasing dietary betaine supplementation; however digestibility EE was insignificantly increased Levels of serum total protein, albumin and globulin were significantly increased when betaine was supplemented, while serum glucose, cholesterol, triglycerides and liver enzymes concentration were significantly decreased Moreover, fat, CP and DM contents of milk were significantly increased (P<0.05) by increasing the level of betaine in the experimental diet, while lactose and ash contents of milk did not significantly affect. Weight gain of does at gestation significantly increased (P<0.01) with increasing dietary betaine supplementation. In addition, daily feed intake of pregnant and lactating rabbit does increased significantly (P<0.01& P<0.05) with increasing dietary betaine level, where rabbit does fed diet containing 1000 mg betaine /kg diet recorded the highest values. Results revealed that the milk yield increased (P<0.01) by 13.03, 26.2, 35.91 and 42.8% in rabbit does fed diet supplemented with 250, 500, 750 and 1000 mg betaine /kg diet, respectively. Also, does fed diets containing betaine weaned more rabbits than those fed unsupplemented diet (5.63 vs. 3.71; P<0.001, as average).
Mortality rate of the pups during lactation period was higher with unsupplemented diet compared to diet supplemented with 250, 500, 750 and 1000 mg betaine (36.16 % vs. 24.63, 20.39, 16.40 and 13.81%;
P<0.01, respectively). The present results concluded that does fed diet with 1000 mg betaine per kg produced high letters weights at three weeks of age and at weaning and also had the highest value of the relative revenue percentage.
In conclusion. supplementing betaine in rabbit does diet significantly improve productive and reproductive performance of rabbit does during pregnn1lC)' and lactation periods and minimal mortality pups under high ambient temperature during summer in Egypt .
Keywords: Betaine, heat stress, digestibility, blood, milk, performance, physiological state.
|
| Publication year |
2011
|
| Pages |
195-213
|
| Availability location |
معهد بحوث الانتاج الحيوانى-شارع نادى الصيد- الدقى- الجيزة
|
| Availability number |
|
| Organization Name |
Animal Production Research Institute (APRI)
|
| serial title |
Egyptian Journal of Rabbit Science
|
| ISSN |
1110-2594
|
| Author(s) from ARC |
|
| Agris Categories |
Animal physiology - Reproduction
|
AGROVOC
TERMS |
Betaine.
Blood.
Digestibility.
Heat stress.
Milk.
Performance testing.
Rabbits.
Summer.
|
| Proposed Agrovoc |
physiological state;
|
| Publication Type |
Journal
|