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Study of Concentrate Supplementation on Growth and Reproductive Performance of Growing Lamb

M. Z. Rahman
Goat and Sheep Production Research Division, BLRI, Savar, Dhaka-1314.

M. Ershaduzzaman
Goat and Sheep Production Research Division, BLRI, Savar, Dhaka-1314.

M. N. Hasan
Goat and Sheep Production Research Division, BLRI, Savar, Dhaka-1314.

M. O. Goni
Goat and Sheep Production Research Division, BLRI, Savar, Dhaka-1314.

M. N. Haque
Goat and Sheep Production Research Division, BLRI, Savar, Dhaka-1314.

Abstract/ Executive Summary:

A research work was undertaken to evaluate the feeding effect of concentrate supplementation on growth and reproductive performance of growing lamb upto first lambing. The trial was conducted at Char-elahi union, Chompanygonj, Noakhali. Thirty female sheep of about average 11.3 (±2.3) kg live weight and about 6-8 months of age were used and randomly allocated into three experimental deists, T₀ (grazing), T₁, (grazing + 1 % concentrate supplement of live weight) and T₂ gazing + 2 % concentrate supplement of live weight). The study revealed that the average daily DM intake was 261.00, 405.35 and 405.35g for deist T0, T₁ and T₂, respectively which was significantly (P≤0.01) different. DM intake when expressed as metabolic body weight also showed significant (P≤0.01) differences. DM intake when expressed as metabolic body weight also showed significant (P≤0.05 among the treatment group. Daily grass DM intake was 261.00, 260.49 and 260.38 g for diets T₀, T₁ and T₂, respectively and this difference was not significant (P≤0.01 among the treatment group. daily average live weight gain was 20.00, 35.05 and 44.00g for diets T₀, T₁ and T₂, respectively. Live weight gain on diet T₂ was significantly (P≤0.01 higher than that of diet T₁ and T0. The results suggested that concentrate supplementation had higher growth response possibly due to better nutrient content s and their utilization. There were no significant (P≥0.01) effect on reproductive performances of service per conception, gestation length (d) a litter size (no.) of three dietary treatments. The percentage of born alive T₂ (100%) and T₁ (90%) were higher in supplemented group compared to non supplemented T) (70%) group. Birth weight of lambs of T@ (male-1.41 kg, female, 1.06kg) and T₁ (male 1.21 kg, female 0.90 kg) group were significantly (P≤0.05) higher compared to that on only grazing group T0 (male 0.72 kg, female 0.56 kg). The concentrate supplementation (2 %) may be suggested for optimizing growth and reproductive performance of female sheep under grazing condition in coastal area.

Keywords: Growing lamb, Concentrate, Growth and Reproductive performance

Location: Mymensingh district, Bangladesh.

Start Date: 01-07-2010

End Date: 30-06-2011

Program Area: Variety and Species

Commodity: Sheep

Objectives:

1. To evaluate the feeding effect of concentrate supplementation on growth and reproductive performance of growing lamb upto first lambing.

Methodology:

The trial was conducted at Char-elahi union, Chompanygonj, Noakhali during the period from Nov. 15, 2010 to May 15, 2011. This region has a subtropical humid climate with an average annual average temperature ranges from a maximum of 34.3 °C; its annual rainfall is 3302 mm. Thirty female lamb of average 11.3 (±2.3) kg live weight and about 6-8 months of age were selected and randomly allocated into three experimental groups, T₀ (grazing), T₁ (grazing + 1% concentrate supplement of LW) and T₂ (grazing + 2 % concentrate supplement of LW). Animals were grazed from 08.00 a.m to 16.00 in the Char areas. In case of supplement group’s (T₁ and T₂) animals were fed concentrate mixture (wheat bran, soybean meal, khasari bran, maize crushed, DCP, salt) which contain 18% CP and 10.31 MJ ME/kg DM. Animals were weighed initially and then at 7 days interval and weighed at 07.30 hour prior to grazing. Date of service, gestation period, litter size, sex, and birth weight of lamb were also recorded after parturition. The statistical analysis was done using ‘SPSS-11.5’ statistical program to computer analysis of variance (ANOVA) in completely randomized design.

Source of Information: BLRI. Proceedings of Annual Research Review Workshop 2010-2011. Bangladesh Livestock Research Institute, Savar, Dhaka-1341

Article Link (Online Journal):

Funding Source:

Total Budget (Tk.) :

Achievement/Findings:

In grazing condition sheep received low or minimum amount of DM (1.96% DM of live weight) which was far below for productive and reproductive purposes. It may be concluded that the supplementation of concentrate (2% of LW) beneficial in terms of increased weight gain, birth weight and born alive of lamb in coastal area.

Knowledge Management: Report/Proceedings