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.
To most readily useful see the effect of the fresh new crossbreeding into intimate precocity from hybrid pet, brand new AFC is assessed considering: hybrid sort of, competition away from sire moms and dads (bull and inseminated regional cattle), hybridization top and you can stock facilities
The newest imply decades at first calving for all types put together is actually ± weeks, symbolizing around 36 months (2 yrs eleven months 19 months ± eleven months 24 hours). Probably the most precocious heifers calved within 2 years ( months). For 50% from heifers, earliest calving is at days. The original characteristics happened normally within ± days ( to help you weeks).
New indicate AFC of crossbreeds is actually lower than the individuals said among the Zebu under the tropics at the over 40 weeks advertised in lot of education ( Rahman et al., 2016 ; Tellah et al., 2015a , 2015b ; Bashir and you can Este Zubeir, 2013 ; Sokouri mais aussi al., 2010 ; Bayemi ainsi que al., 2005 ). , 2015 ). Certain people possess said show extremely alongside our very own observance towards various other crossbreeds during the Africa, regardless of cow breeds utilized in new check out: 34 days one of many Montbeliard crossbreeds when you look at the Algeria ( Madani and you will Mouffok, 2008 ) and you can Morocco ( Srairi and you will Mousili, 2014 ), ± 0.43 months regarding the Girolando crossbreed when you look at the Benin ( Doko et al., 2012 ). It had been the same with the Holstein-Friesian hybrid cattle from inside the Ethiopia within thirty-six.4 ± 1.eight days, brand new Borgou and you can Lagunaire breeds during the 36.1 ± 6.30 days inside Benin ( Adamou-Ndiaye et al., 2003 ) plus new Azawak Zebu during the thirty-six.5 ± 4.10 and you can ± thirteen weeks in Niger ( Achard and you can Chanono, 2006 , 1997 ).
All of our observation was more than people advertised from the Genzebu ainsi que al. (2016) one of hybrid cows into the Kenya (twenty six.9 ± 5.4 and twenty-seven.0 ± step three.7 days). It absolutely was a bit better than the newest observations because of the Ngodigha mais aussi al. (2009) out-of 29.7 ± 2.5 months one of crossbreeds (Holstein x Bunadji) from inside the Nigeria, Ben Salem mais aussi al. (2009) out-of 29.seven ± cuatro.12 months in Holstein into the Tunisia and you will Srairi and you can Mousili (2014) from 30 months within the Montbeliard in the Morocco. Some adaptation points in the AFC was indeed reviewed to help you achieve the comments.
One of the various other crossbreeding brands identified ( Desk step one ), the brand new Fulani Zebu (FZ) inseminated having semen from Montbeliard (MB x FZ) and you may Alps Brown (Ab x FZ) have delivered the quintessential precocious corssbreeds (first calving within 24 months) (5%). If you’re, the new inseminations away from Fulani Zebu cattle to your semen off Holstein (HT x FZ) and you can off Tarentaise (T x FZ) then your insemination from Gudali Zebu cows that have semen out-of Montbeliard (MB x GZ) provides produced the newest precocious crossbreed cows.
Minimal is weeks as well as the limitation try weeks
Desk step 1: Age at first calving (months) centered on crossbreeding input milk products cows facilities in your neighborhood off Bobo-Dioulasso when you look at the Burkina Faso
The www.datingranking.net/it/siti-di-incontri-geek analysis focused on the fresh new reproduction tabs on twenty (20) crossbreed cows due to the brand new interbreeding through the fake insemination ranging from local breed cows (Gudali Zebu and Fulani Zebu) and amazing breed bulls (Holstein, Alps Brown, Tarentaise, Montbeliard). These types of crossbreeds was in fact produced anywhere between 1999 and 2010 and you will offered its very first calf ranging from 2002 and you can 2012 into the three increased stock facilities inside metropolitan and residential district areas of Bobo-Dioulasso. Each of these facilities provides on 50 hybrid cows during the manufacturing. The original farm is situated in a city, the next 10 Kilometres out within south get off therefore the 3rd 60 Km aside at the east get-off off Bobo-Dioulasso. Original surveys ranging from during these portion aided to select this type of about three facilities having a livestock register (temperatures and you may fake insemination overseeing sheets). Incidents regarding private track of animal reproduction particularly calving times, schedules of the basic warms and inseminations were registered day-after-day by the the cattlemen and the inseminators. The fresh exploitation of those documents managed to make it possible to decide twenty (20) basic calving’s add up to the original properties. These types of facilities is characterized by the existence of lost, good herd fitness keeping track of, a guided breeding form (mostly AI, having not enough a specified bull), the fresh new concentrate provides (thread cake or cottonseed and you may commercial malt) in the ration serving and you may extreme delivery regarding silage and farming because of the situations. The only real aim of this procedure types of ‘s the manufacturing and you can revenue of yourself processed milk, two times a day (early morning and evening). Brand new centers are supported to your pets to their return of grazing plus the newest early morning on milking go out.