Data extracted from the analysis of herd records were entered in Excel. The descriptive statistical analysis of the age at first calving (calculation of frequencies, means, standard deviations, minimum and maximum) was made with the XLSTAT software (6.1.9 release). These parameters were analyzed by ANOVA and the results were compared using the Newman-Keuls test. Differences were considered significant for p < 0.05.
The latest indicate many years at first calving for all types make was ± days, symbolizing up to 36 months (24 months eleven months 19 weeks ± eleven weeks twenty four hours). The minimum is weeks additionally the limit was months. The essential precocious heifers calved within this 2 yrs ( months). To possess 50% out-of heifers, earliest calving was at months. The initial properties happened typically on ± months ( so you’re able to months).
The fresh new mean AFC of crossbreeds was below men and women stated among Zebu in tropics at over forty weeks claimed in lots of education ( Rahman mais aussi al., 2016 ; Tellah et al., 2015a , 2015b ; Bashir and El Zubeir, 2013 ; Sokouri mais aussi al., 2010 ; Bayemi et al., 2005 ). , 2015 ). Particular article authors have reported show very near to the observation toward other crossbreeds in Africa, in spite of cow types included in this new check out: 34 months among the many Montbeliard crossbreeds during the Algeria ( Madani and you can Mouffok, 2008 ) and you will Morocco ( Srairi and you will Mousili, 2014 ), ± 0.43 months on the Girolando hybrid in Benin ( Doko et al., 2012 ). It had been an equivalent into Holstein-Friesian hybrid cows inside the Ethiopia within thirty six.cuatro ± 1.seven weeks, the brand new Borgou and you will Lagunaire breeds during the thirty-six.step one ± six.29 weeks into the Benin ( Adamou-Ndiaye et al., 2003 ) plus brand new Azawak Zebu on thirty six.5 ± cuatro.10 and ± thirteen months for the Niger ( Achard and you may Chanono, 2006 , 1997 ).
Our very own observation is higher than the individuals reported of the Genzebu ainsi que al. (2016) one of hybrid cows for the Kenya (twenty six.nine ± 5.cuatro and twenty-seven.0 ± step three.7 weeks). It was somewhat a lot better than the fresh observations by the Ngodigha et al. (2009) regarding 29.7 ± dos.5 months among crossbreeds (Holstein x Bunadji) in Nigeria, Ben Salem mais aussi al. (2009) off 29.7 ± 4.one year during the Holstein inside the Tunisia and you will Srairi and you can Mousili (2014) out-of 29 days during the Montbeliard in the Morocco.
One of many other crossbreeding types understood ( Desk step one ), the fresh Fulani Zebu (FZ) inseminated with semen off Montbeliard (MB x FZ) and you will Alps Brown (Ab x FZ) features lead the absolute most precocious corssbreeds (earliest calving within 24 months) (5%). When you’re, the fresh inseminations off Fulani Zebu cows towards semen off Holstein (HT x FZ) and from Tarentaise (T x FZ) then insemination away from Gudali Zebu cattle which have semen off Montbeliard (MB x GZ) has actually delivered the precocious crossbreed cows.
Certain version activities associated with AFC was indeed reviewed so you can achieve the comments
Desk step 1: Many years in the beginning calving (months) predicated on crossbreeding enter in whole milk cattle facilities in your neighborhood away from Bobo-Dioulasso from inside the Burkina Faso
To help you better understand the aftereffect of new crossbreeding to the sexual precocity of hybrid dogs, the brand new AFC is reviewed considering: hybrid sort of, race away from sire parents (bull and you will inseminated regional cattle), hybridization top and you may stock https://datingranking.net/biker-dating/ farms
The research concerned about the new reproduction track of twenty (20) hybrid cows because of this new interbreeding from artificial insemination anywhere between regional breed cows (Gudali Zebu and you may Fulani Zebu) and you will exotic breed bulls (Holstein, Alps Brownish, Tarentaise, Montbeliard). Such crossbreeds have been born anywhere between 1999 and 2010 and you will provided the very first calf between 2002 and you may 2012 towards around three increased inventory facilities for the urban and you may suburban regions of Bobo-Dioulasso. Each of these facilities features regarding the fifty hybrid cattle inside development. The initial ranch is found in an urban area, the following 10 Kilometer aside at the southern exit plus the 3rd 60 Km out at eastern leave away from Bobo-Dioulasso. Initial surveys between on these components aided to select these types of three facilities that have a cattle check in (heat and you can phony insemination monitoring sheet sets). Incidents connected with personal track of creature breeding such as for instance calving dates, dates of your own basic heats and you will inseminations was registered every day by the fresh new cattlemen additionally the inseminators. The latest exploitation of these documents managed to get you can easily to choose twenty (20) first calving’s add up to the original qualities. These farms was characterized by the existence of destroyed, a good herd health overseeing, a led breeding mode (primarily AI, having decreased a specified bull), new concentrate supplies (thread cake or cottonseed and you may industrial malt) regarding the ration serving and you may extreme distribution regarding silage and you will farming by products. Truly the only function of that it process kind of is the development and selling regarding manually canned milk, twice daily (morning and night). The fresh new concentrates are served to your animals on their get back away from grazing and in this new early morning at milking day.