The essential difference between spring season unmarried and you may dual delivery, elevated out-of 0
Full, the real difference during the increases between men and women is dependent on conformation and you will metabolic rate; predicated on Benevent mais aussi al (1971) for each and every intercourse evolves within the command over its very own endocrine equilibrium, and this produces an even more otherwise a faster essential development of areas.
Aftereffect of the birth type
Regardless of the entire year, solitary beginning lambs have been constantly heavy than simply twin no matter what decades since expressed from the imply lbs each and every birth type of (Figure 5). 78 kilogram from the beginning to 1.fifty kilogram at the 3 months, whereas in autumn the real difference smaller pronounced from the delivery 0.33 kg, increased to step 1.38 kilogram within ninety days. These abilities have been in keeping with those of several authors (Afolayan ainsi que al 2006; Ekiz and you may Altinel 2006; Kuchtik and you can Dobes 2006; Merghem age tal 2011 and you will Yilmaz and you can Altin 2011).
The difference from the mediocre every day get (Figure 6) between springtime single and you may twin birth diminished out-of 36.eight g/d at the 0-thirty day to twenty two.2 grams/d during the sixty-ninety days, whereas the difference dropped away from 19.seven grams/d so you’re able to 15.cuatro g/d throughout the autumn at the same age group. Whilst punctual decrease in the average daily get, single delivery average each and every day gain stayed higher than twin average day-after-day gain throughout the period ranging from 0 so you can 3 months. As the revealed within this research, quality of unmarried more than double delivery lambs might have been advertised because of the (Dekhili and you can Mahnane 2004 and you can Boussena ainsi que al 2013). Considering Theriez (1991), the fresh bad outcomes of litter size and you will mutton growth is really of the time allotted to a decrease in the amount of dairy offered for each and every lamb.
Aftereffect of the newest mother’s years
Long lasting seasons, efficiency indicated that the greatest lamb’s loads was mainly pertaining to next generation “three to six years” with the next classification “six in order to nine years”. During the springtime an average lambs’ weights was indeed 10.6 kg on the second age group and ten.dos kg into the 3rd age group and you can correspondingly nine.99 kg and you may 9.twenty-four kg throughout trip (Figure eight and you may 8). This trying to find was in agreement which have that from (VanWyk et al 1993 and you may El Fadili 2008) just who exhibited the significant determine of your mom’s decades on lamb’s pounds, additionally, all of our show indicated that lamb’s growth was also dependent on ewes ages (Contour 9 and you can 10).
The results of the analysis of variance showed that differences between age groups were highly significant (p < 0.01). Examination of the means (Table 1) resulted in 4 groups (A, B, C, and D) highly different (p < 0. 01) according toTukey and Newman-keuls tests.
The first group A, birthing lambs with the highest weight included ewes aged from 3 to 9 years, regardless the season. Group C was mostly related to the age group less or equal to 3 sito gratis incontri sobrio years, whereas the lowest weights were always related to the age group more than 9 years. Indeed, this finding was also mentioned by Chopra and Acharya (1971) who showed that the intermediate age generally, gives birth to more vigorous lambs, whereas younger and older ewes give lighter lambs. The differences in lamb’s weight are explained by the fact that younger ewes (< 3 years) are still growing with bodies still developing, which leads them to share nutrients with their lambs, whereas ewes between 3 to 9 years have reached full growth and thus the lambs are provided with enough quantitative and qualitative nutrients. It should be also noted that the increasing growth in lambs' weight was related to the maternal behaviour; so lambs born from mothers aged of 3 to 9 years, which have already given several births, were much better supported than those born from first furrowing mothers aged less than 3 years. Allouche et al (2011) found similar results as ours for the same breed.